/Engine/Source/Runtime/MovieScene/Public/EntitySystem/MovieSceneEntityRange.h
Get a pointer to an entity's component from its templated component array index, using the entity's index within this range.
A pointer to the component matching the constness of the access-mode, or nullptr if the component does not exist in this entity range.
template<int ComponentTypeIndex> auto * GetComponentOptional ( int32 EntityIndex ) const